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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.749.23165" ID-GBIF-Dataset="bfd2bd34-077c-41ba-85d7-49105d681f94" ID-PMC="PMC5904484" ID-Pensoft-Pub="1313-2970-749-1" ID-PubMed="29674920" ID-ZBK="F941B98FC5DB4784A676977496D7E472" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1313-2970-749-1" ModsDocOrigin="ZooKeys 749" ModsDocTitle="Seven new freshwater species of Gammarus from southern China (Crustacea, Amphipoda, Gammaridae)" checkinTime="1523392991472" checkinUser="pensoft" docAuthor="Hou, Zhonge, Zhao, Shuangyan &amp; Li, Shuqiang" docDate="2018" docId="C04BB2D14559558E4B98BE018BB34B1C" docLanguage="en" docName="ZooKeys 749: 1-79" docOrigin="ZooKeys 749" docSource="http://dx.doi.org/10.3897/zookeys.749.23165" docTitle="Gammarus zhigangi Hou &amp; Li, sp. n." docType="treatment" docUuid="8303CC73-FE70-41D1-95E5-D8F23B2DF809" docUuidSource="ZooBank" docVersion="5" lastPageNumber="15" masterDocId="FFA9FFBB6F2CFFFBC121FFD3FFFDAD60" masterDocTitle="Seven new freshwater species of Gammarus from southern China (Crustacea, Amphipoda, Gammaridae)" masterLastPageNumber="79" masterPageNumber="1" pageNumber="11" updateTime="1668165682425" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>Seven new freshwater species of Gammarus from southern China (Crustacea, Amphipoda, Gammaridae)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Hou, Zhonge</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Zhao, Shuangyan</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Li, Shuqiang</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
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<mods:title>ZooKeys</mods:title>
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<mods:part>
<mods:date>2018</mods:date>
<mods:detail type="volume">
<mods:number>749</mods:number>
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<mods:start>1</mods:start>
<mods:end>79</mods:end>
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<mods:url>http://dx.doi.org/10.3897/zookeys.749.23165</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.749.23165</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-749-1</mods:identifier>
<mods:identifier type="ZBK">F941B98FC5DB4784A676977496D7E472</mods:identifier>
<mods:identifier type="ZooBank">F941B98FC5DB4784A676977496D7E472</mods:identifier>
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<treatment ID-GBIF-Taxon="143536415" LSID="urn:lsid:zoobank.org:act:8303CC73-FE70-41D1-95E5-D8F23B2DF809" httpUri="http://treatment.plazi.org/id/C04BB2D14559558E4B98BE018BB34B1C" lastPageId="14" lastPageNumber="15" pageId="10" pageNumber="11">
<subSubSection pageId="10" pageNumber="11" type="nomenclature">
<paragraph pageId="10" pageNumber="11">
<taxonomicName LSID="http://zoobank.org/8303CC73-FE70-41D1-95E5-D8F23B2DF809" authority="Hou &amp; Li" class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi Hou &amp; Li</taxonomicName>
<taxonomicNameLabel pageId="10" pageNumber="11">sp. n.</taxonomicNameLabel>
Figs 14, 15, 16, 17, 18, 19, 20
</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="11" type="materials_examined">
<paragraph pageId="10" pageNumber="11">Material examined.</paragraph>
<paragraph pageId="10" pageNumber="11">
Holotype: male (IZCAS-I-A1424-1), 9.1 mm, Tiantai Mountain National Forest Park (
<geoCoordinate direction="east" orientation="longitude" precision="555" value="107.05">107.05°E</geoCoordinate>
,
<geoCoordinate direction="north" orientation="latitude" precision="555" value="33.25">33.25°N</geoCoordinate>
), altitude 865 m, Hanzhong City, Shaanxi Province, China, October 25, 2013, collected by Zhigang Chen. Paratype: female (IZCAS-I-A1424-2), 10.9 mm, same data as holotype.
</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="11" type="etymology">
<paragraph pageId="10" pageNumber="11">Etymology.</paragraph>
<paragraph pageId="10" pageNumber="11">The new species is named after Mr. Zhigang Chen who extensively collected gammarids from China; noun (name) in genitive case.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="11" type="diagnosis">
<paragraph pageId="10" pageNumber="11">Diagnosis.</paragraph>
<paragraph pageId="10" pageNumber="11">Antenna II calceoli present in male; merus of pereopod III with long, straight setae on posterior margin; inner ramus of uropod III reaching 0.6 times the length of outer ramus, outer ramus with no plumose setae on outer margin but with a row of plumose setae on inner margin.</paragraph>
</subSubSection>
<subSubSection lastPageId="12" lastPageNumber="13" pageId="10" pageNumber="11" type="description">
<paragraph pageId="10" pageNumber="11">Description of holotype male</paragraph>
<paragraph pageId="10" pageNumber="11">(IZCAS-I-A1424-1). 9.1 mm.</paragraph>
<paragraph pageId="10" pageNumber="11">Head (Fig. 14A): eyes reniform, inferior antennal sinus deep, lateral cephalic lobe rounded.</paragraph>
<caption pageId="10" pageNumber="11">
<paragraph pageId="10" pageNumber="11">
Figure 14.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n., male holotype. A head B antenna I C flagellar article of antenna I with aesthetasc D antenna II E calceoli of antenna II F upper lip G lower lip H left mandible I incisor and lacinia mobilis of right mandible J left maxilla I K distal part of palp article II of right maxilla I L maxilla II M maxilliped.
</paragraph>
</caption>
<paragraph pageId="10" pageNumber="11">
Antenna I (Fig. 14B, C): peduncle articles
<normalizedToken originalValue="IIII">I-III</normalizedToken>
in length ratio 1.0: 0.6: 0.3, with distal setae; flagellum with 24 articles, articles
<normalizedToken originalValue="VXXII">V-XXII</normalizedToken>
with aesthetascs; accessory
<normalizedToken originalValue="flagellum">flagellum</normalizedToken>
with three articles; both primary and accessory
<normalizedToken originalValue="flagella">flagella</normalizedToken>
with short distal setae.
</paragraph>
<paragraph pageId="10" pageNumber="11">
Antenna II (Fig. 14D, E): peduncle articles
<normalizedToken originalValue="IIIV">III-V</normalizedToken>
in length ratio 1.0: 2.8: 2.7, article IV of peduncle with lateral setae and article V of peduncle with clusters of lateral and medial setae; flagellum with ten articles, with setae along ventral margin; articles
<normalizedToken originalValue="IIIVI">III-VI</normalizedToken>
with calceoli.
</paragraph>
<paragraph pageId="10" pageNumber="11">Upper lip (Fig. 14F): ventral margin rounded, bearing short minute setae.</paragraph>
<paragraph pageId="10" pageNumber="11">
Mandible (Fig. 14H, I): left mandible incisor with five teeth; lacinia mobilis with four teeth; spine row with five pairs of plumose setae; articles
<normalizedToken originalValue="IIII">I-III</normalizedToken>
of palp in length ratio 1.0: 3.1: 2.7, second article of palp with 12 marginal setae, article III with four A-setae, two B-setae, a row of D-setae, and five E-setae apically; incisor of right mandible with four teeth, lacinia mobilis bifurcate, with small teeth.
</paragraph>
<paragraph pageId="10" pageNumber="11">Lower lip (Fig. 14G): inner lobes lacking, outer lobes covered with thin setae.</paragraph>
<paragraph pageId="10" pageNumber="11">Maxilla I (Fig. 14J, K): asymmetrical, left inner plate with 15 plumose setae on medial margin; outer plate with 11 robust serrated apical spines, each spine with small teeth; second article of left palp with six slender spines and one seta apically; second article of right palp with five stout spines, one stiff seta and one slender spine.</paragraph>
<paragraph pageId="10" pageNumber="11">Maxilla II (Fig. 14L): inner plate with 15 plumose facial setae in an oblique row; inner and outer plates with long setae apically.</paragraph>
<paragraph pageId="10" pageNumber="11">Maxilliped (Fig. 14M): inner plate with three stout apical spines and one subapical spine, 15 plumose setae along lateral margin; outer plate bearing a row of 11 blade spines and three plumose setae apically; article IV of palp hooked, with three setae at hinge of unguis.</paragraph>
<paragraph pageId="10" pageNumber="11">Pereon.Gnathopod I (Fig. 15A, B): coxal plate bearing three setae and one seta on anterior and posterior margins, respectively; basis with long setae on anterior and posterior margins; carpus 1.3 times as long as wide, 0.7 times as long as propodus, ventral margin bearing three clusters of setae; propodus oval, palm with one medial spine and 13 spines on posterior margin and surface; dactylus with one seta on outer margin.</paragraph>
<caption pageId="10" pageNumber="11">
<paragraph pageId="10" pageNumber="11">
Figure 15.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n., male holotype. A gnathopod I B propodus and dactylus of gnathopod I C gnathopod II D propodus and dactylus of gnathopod II E epimeral plate I F epimeral plate II G epimeral plate III H dorsal margins of urosomites
<normalizedToken originalValue="IIII">I-III</normalizedToken>
.
</paragraph>
</caption>
<paragraph lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11">
Gnathopod II (Fig. 15C, D): coxal plate bearing four setae and one seta on anterior and posterior margins, respectively; basis with long setae on anterior and posterior margins; carpus 1.7 times as long as wide, 0.8 times as long as propodus, bearing six
<pageBreakToken pageId="11" pageNumber="12" start="start">clusters</pageBreakToken>
of setae along ventral margin, two clusters of setae on dorsal margin; propodus subrectangular, palm margin with one medial spine and five spines on lateral posterodistal corner; dactylus with one seta on outer margin.
</paragraph>
<paragraph pageId="11" pageNumber="12">Pereopod III (Fig. 16A, B): coxal plate bearing three setae on anterior margin and one seta on posterior margin; basis elongated, with short setae along anterior margin and long setae along posterior margin; merus with long straight setae on posterior margin and two single spines on anterior margin, anterodistal corner with one spine accompanied by two setae; carpus with straight setae on posterior margin; propodus with three spines accompanied by setae on posterior margin and two spines on posterodistal corner; dactylus with one plumose seta on anterior margin, and two setae at hinge of unguis.</paragraph>
<caption pageId="11" pageNumber="12">
<paragraph pageId="11" pageNumber="12">
Figure 16.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n., male holotype. A pereopod III B dactylus of pereopod III C pereopod IV D dactylus of pereopod IV E pereopod V F dactylus of pereopod V G pereopod VI H dactylus of pereopod VI I pereopod VII J dactylus of pereopod VII.
</paragraph>
</caption>
<paragraph pageId="11" pageNumber="12">Pereopod IV (Fig. 16C, D): coxal plate concave, bearing three setae on anterior margin and six setae on posterior margin; basis with two short setae on anterodistal corner and long setae along posterior margin; merus with clusters of setae on posterior margin and one spine on anterior margin, anterodistal corner with one spine accompanied by two setae; carpus with three pairs of spines accompanied by setae on posterior margin, anterodistal corner with one spine accompanied by three setae; propodus with three single spines accompanied by setae on posterior margin and two spines on posterodistal corner; dactylus with one plumose seta on anterior margin, and two setae at hinge of unguis.</paragraph>
<paragraph pageId="11" pageNumber="12">Pereopod V (Fig. 16E, F): coxal plate bearing one seta on anterior margin and two setae on posterior margin; basis with two pairs of setae and six spines accompanied by fine setae on anterior margin, anterodistal corner with one spine accompanied by setae, posterior margin with a row of 11 setae; merus with one spine accompanied by setae on anterior margin and a pair of spines on posterior margin, anterodistal and posterodistal corners with two spines accompanied by setae each; carpus and propodus with groups of spines on anterior margin; dactylus with one plumose seta on posterior margin, and two setae at hinge of unguis.</paragraph>
<paragraph pageId="11" pageNumber="12">Pereopod VI (Figs 16G, H): coxal plate bearing one seta on anterior margin and two setae on posterior margin; basis with four simple setae and five spines accompanied by setae on anterior margin, anterodistal corner with three spines and two fine setae, posterior margin with a row of ten fine setae; merus with three pairs of spines on anterior margin and one spine on posterior margin, anterodistal and posterodistal corners with four spines each; carpus with two groups of spines accompanied by setae on anterior and posterior margins each, anterodistal corner with five spines accompanied by one fine seta and posterodistal corner with five spines; propodus with four groups of spines on anterior margin; dactylus with one plumose seta on posterior margin, and two setae at hinge of unguis.</paragraph>
<paragraph lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12">
Pereopod VII (Fig. 16I, J): coxal plate bearing two setae on posterior margin; basis with four long simple setae and four spines on anterior margin, anterodistal corner with two spines and two fine setae, posterior margin with a row of 11 setae; merus with two groups of spines on anterior margin and a pair of spines on posterior margin, anterodistal corner with four spines accompanied by two setae and posterodistal
<pageBreakToken pageId="12" pageNumber="13" start="start">corner</pageBreakToken>
with three spines accompanied by one seta; carpus with three groups of spines on anterior margin and two groups of spines on posterior margin, anterodistal corner with three spines accompanied by one seta and posterodistal corner with three spines; propodus with three groups of spines on anterior margin; dactylus with one plumose seta on posterior margin, and two setae at hinge of unguis.
</paragraph>
<paragraph pageId="12" pageNumber="13">Coxal gills: coxal gill of gnathopod II and gills of pereopods III to V a little longer than bases; gill of pereopod VI a little shorter than basis; gill of pereopod VII smallest, approx. half the length of basis.</paragraph>
<paragraph pageId="12" pageNumber="13">
Pleon.Epimeral plates (Fig. 15
<normalizedToken originalValue="EG">E-G</normalizedToken>
): plate I ventrally rounded, bearing three setae and two spines on anteroventral margin and four tiny setae on posterior margin; plate II with two spines on ventral margin and five tiny setae on posterior margin, posterodistal corner subacute; plate III with three spines on ventral margin and five tiny setae on posterior margin, posterodistal corner subacute.
</paragraph>
<paragraph pageId="12" pageNumber="13">
Pleopods
<normalizedToken originalValue="IIII">I-III</normalizedToken>
(Fig. 17
<normalizedToken originalValue="AC">A-C</normalizedToken>
): similar, peduncle with two retinacula accompanied by one plumose seta; outer ramus slightly shorter than inner ramus, both inner and outer rami fringed with plumose setae.
</paragraph>
<caption pageId="12" pageNumber="13">
<paragraph pageId="12" pageNumber="13">
Figure 17.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n., male holotype. A pleopod I B pleopod II C pleopod III D uropod I E uropod II F uropod III G telson.
</paragraph>
</caption>
<paragraph pageId="12" pageNumber="13">Urosome.Urosomites (Fig. 15H): urosomite I with one-one-one-one spines accompanied by setae on dorsal margin; urosomite II with one-one-one-two spines accompanied by setae on dorsal margin; urosomite III with one spine accompanied by two setae on each side and three setae on dorsal margin.</paragraph>
<paragraph pageId="12" pageNumber="13">
Uropods
<normalizedToken originalValue="IIII">I-III</normalizedToken>
(Fig. 17
<normalizedToken originalValue="DF">D-F</normalizedToken>
): uropod I peduncle with one basofacial spine, two spines on inner and outer margins each, inner and outer distal corners with one and two spines, respectively; inner ramus with two spines on inner margin; outer ramus with one spine on inner and outer margins each; both rami with five terminal spines. Uropod II peduncle with one spine on inner and outer margins each, and with one distal spine on each corner; inner ramus with two spines on inner margin and one spine on outer margin; outer ramus with one spine on inner and outer margins each; both rami with five terminal spines. Uropod III peduncle with one spine accompanied by one seta on surface and six distal spines; inner ramus 1.4 times as long as peduncle, reaching 0.6 times the length of outer ramus, with two spines accompanied by eight plumose setae and two simple setae on inner margin, five plumose setae on outer margin, and two distal spines accompanied by setae; proximal article of outer ramus with six spines accompanied by simple setae on outer margin, with 13 plumose setae on inner margin, terminal article with simple setae, a little longer than adjacent spines.
</paragraph>
<paragraph pageId="12" pageNumber="13">Telson (Fig. 17G): deeply cleft, approx. as long as wide; each lobe with clusters of setae on surface, bearing two distal spines accompanied by setae.</paragraph>
</subSubSection>
<subSubSection lastPageId="13" lastPageNumber="14" pageId="12" pageNumber="13" type="description">
<paragraph pageId="12" pageNumber="13">Description of paratype female</paragraph>
<paragraph pageId="12" pageNumber="13">(IZCAS-I-A1424-2). 10.9 mm.</paragraph>
<paragraph pageId="12" pageNumber="13">Pereon.Gnathopod I (Fig. 18A, B): coxal plate bearing three and one setae on anterior and posterior margins, respectively; basis with setae on anterior and posterior margins; propodus oval, palm with seven spines on posterior margin, bearing long setae along anterior and posterior margins; dactylus with one seta on outer margin.</paragraph>
<caption pageId="12" pageNumber="13">
<paragraph pageId="12" pageNumber="13">
Figure 18.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n., female paratype. A gnathopod I B propodus and dactylus of gnathopod I C gnathopod II D propodus and dactylus of gnathopod II.
</paragraph>
</caption>
<paragraph lastPageId="13" lastPageNumber="14" pageId="12" pageNumber="13">
Gnathopod II (Fig. 18C, D): coxal plate bearing five and one setae on anterior and posterior margins, respectively; basis with setae on anterior and posterior margins;
<pageBreakToken pageId="13" pageNumber="14" start="start">propodus</pageBreakToken>
subrectangular, palm margin with two stout spines and three stiff spines on posterodistal corner, bearing long setae along anterior and posterior margins; dactylus with one seta on outer margin.
</paragraph>
<paragraph pageId="13" pageNumber="14">Pereopods III and IV (Fig. 19A, B): with more setae on posterior margins than those of male.</paragraph>
<caption pageId="13" pageNumber="14">
<paragraph pageId="13" pageNumber="14">
Figure 19.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n., female paratype. A pereopod III B pereopod IV C pereopod V D pereopod VI E pereopod VII F telson.
</paragraph>
</caption>
<paragraph pageId="13" pageNumber="14">
Pereopods
<normalizedToken originalValue="VVII">V-VII</normalizedToken>
(Fig. 19
<normalizedToken originalValue="CE">C-E</normalizedToken>
): similar to those of male, but with more setae on anterior margins of pereopods
<normalizedToken originalValue="VVI">V-VI</normalizedToken>
.
</paragraph>
<paragraph pageId="13" pageNumber="14">
Oostegite (Fig. 20
<normalizedToken originalValue="AD">A-D</normalizedToken>
): oostegite of gnathopod II broad, with marginal setae, oostegites of pereopods III and IV elongated, oostegite of pereopod V smallest.
</paragraph>
<caption pageId="13" pageNumber="14">
<paragraph pageId="13" pageNumber="14">
Figure 20.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n., female paratype. A oostegite of gnathopod II B oostegite of pereopod III C oostegite of pereopod IV D oostegite of pereopod V E uropod I F uropod II G uropod III.
</paragraph>
</caption>
<paragraph pageId="13" pageNumber="14">
Urosome.Uropods
<normalizedToken originalValue="IIII">I-III</normalizedToken>
(Fig. 20
<normalizedToken originalValue="EG">E-G</normalizedToken>
): uropods I and II similar to those of male. Uropod III peduncle with one spine accompanied by one seta on surface and five distal spines; inner ramus 1.3 times as long as peduncle, reaching 0.6 times the length of outer ramus, with one spine accompanied by five plumose setae and one simple seta on inner margin and five plumose setae on outer margin; proximal article of outer ramus with three pairs of spines accompanied by simple setae on outer margin, with one spine accompanied by four plumose setae and three simple setae on inner margin, terminal article a little longer than adjacent spines.
</paragraph>
<paragraph pageId="13" pageNumber="14">Telson (Fig. 19F): cleft, approx. as long as wide; each lobe with one spine accompanied by two setae and two clusters of three setae on surface, bearing two distal spines accompanied by setae.</paragraph>
</subSubSection>
<subSubSection pageId="13" pageNumber="14" type="habitat">
<paragraph pageId="13" pageNumber="14">Habitat.</paragraph>
<paragraph pageId="13" pageNumber="14">
Specimens were collected from a geyser in Tiantai Mountain National Forest Park. The geyser is influenced by the formation of cavities in the deep strata. When the groundwater is filled with cavities, the geyser will erupt from the rock cracks. The intermittent geyser is considered as
<normalizedToken originalValue="persons">person's</normalizedToken>
breathing, therefore it is known as a breathing spring. This park is located in the middle of the southern slope of Qinling with lush forests; the topography is full of deep valleys and steep mountains.
</paragraph>
</subSubSection>
<subSubSection lastPageId="14" lastPageNumber="15" pageId="13" pageNumber="14" type="remarks">
<paragraph pageId="13" pageNumber="14">Remarks.</paragraph>
<paragraph pageId="13" pageNumber="14">
The new species of
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n. is most similar to
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus qinling" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="qinling">Gammarus qinling</taxonomicName>
Hou &amp; Li, sp. n. in antenna II calceoli present; merus of pereopod III with straight setae on posterior margin; and epimeral plates II and III blunt on posterodistal corners.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n. differs from
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus qinling" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="qinling">Gammarus qinling</taxonomicName>
Hou &amp; Li, sp. n. (
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus qinling" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="qinling">Gammarus qinling</taxonomicName>
in parentheses) by pereopod V of male and female with more setae on anterior margin of merus; and uropod III inner ramus 0.6 times the length of outer ramus (0.5 times), outer margin of outer ramus with no plumose setae (with plumose setae).
</paragraph>
<paragraph pageId="13" pageNumber="14">
The new species of
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n. is similar to
<taxonomicName lsidName="G. preciosus" pageId="13" pageNumber="14" rank="species" species="preciosus">G. preciosus</taxonomicName>
Wang, Hou &amp; Li, 2009 in antenna II calceoli present; uropod III without plumose setae on outer margin of outer ramus, and terminal article longer than adjacent spines; and telson long than wide.
<taxonomicName class="Malacostraca" family="Gammaridae" genus="Gammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gammarus zhigangi" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="zhigangi">Gammarus zhigangi</taxonomicName>
Hou &amp; Li, sp. n. can be distinguished from
<taxonomicName lsidName="G. preciosus" pageId="13" pageNumber="14" rank="species" species="preciosus">G. preciosus</taxonomicName>
Wang, Hou &amp; Li, 2009 (
<taxonomicName lsidName="G. preciosus" pageId="13" pageNumber="14" rank="species" species="preciosus">G. preciosus</taxonomicName>
in parentheses) in epimeral plate I with three setae and two spines on anteroventral margin (with eight long setae on anteroventral margin); epimeral plate III with five setae on posterior margin (with 11 setae on posterior margin); and uropod III inner ramus 0.6 times the length of outer ramus (inner ramus 0.4 times the length of outer ramus).
</paragraph>
<paragraph pageId="14" pageNumber="15">
<pageBreakToken pageId="14" pageNumber="15" start="start">This</pageBreakToken>
new species can be distinguished from
<taxonomicName lsidName="G. murarius" pageId="14" pageNumber="15" rank="species" species="murarius">G. murarius</taxonomicName>
Hou &amp; Li, 2004 (
<taxonomicName lsidName="G. murarius" pageId="14" pageNumber="15" rank="species" species="murarius">G. murarius</taxonomicName>
in parentheses) by the following characters: merus and carpus of pereopod III with straight setae on posterior margins (with long curled setae); epimeral plate I bearing three setae and two spines on anteroventral margin (only with four setae); and uropod III without plumose setae on outer margin of outer ramus (with plumose).
</paragraph>
</subSubSection>
</treatment>
</document>